I sell a large number of both Exmark and Bobcat 60" mowers with both engines but I have to say my personal preference is the 29 Kawasaki. I have experienced less motor issues pertaining to ethanol, dirt ingestion, and oil leaks out the Kawasaki FX series and they tend to have less overheating issues. Also parts are faster to arrive to our dealership when needed. Both are great engines and this year the new RED Equipped Exmark units in the X Series run amazing and I think they are moving in the right direction. If you have any questions feel free to call me. (770) 856-4179 Andrew Dallas, GA